The full range of 16v and 20v brushless systems gives you variable speed control and a safe braking system with a versatile battery and allows for a large number of charge cycles Battery voltage:20v Output shaft:1/4"lnner six angle No-load speed:3300r/min Impact frequency:4500bpm Maximum torque:230N.m Net weight:0.97Kg Bolt specification:M6-M16 Delivery time:30 days for OEM,15 days for ready goods Payment method:T/T,L/C Standard accessory:BMC BOX*1,battery*2 charger*1